What exactly is the performance concern regarding objects and stuff? My computer is several years old and was midrange to begin with, six cores amd, haven't seen the game use more than 60% of one core, apart from some spikes. The gpu is maxed out constantly, but CPU is mostly asleep and I'm compiling kernels in the background while playing and use damocles map tool (only uses one core) while playing, watching Netflix and have pycharm run my bot in debug mode. Not an attempt to troll, but I wonder why block calculations and pathing pose a performance problem when a three year old 500€ computer isn't even running at 20% of its computing potential.
After analyzing stats on both Linux and Windows, I'm going to say the game has bottlenecks in the engine that are neither CPU nor GPU bound. OpenGL is hamstrung at 1.6 on Linux, but that is the only issue I've seen thus far and that can be bypassed easily by Steam Proton.
That being said, I think the engine developers should shift their efforts to Vulkan, even if it's just a shader port. Most cards in recent years support Vulkan just fine. Once Vulkan support is in place then they profile the engine and improve performance. Maintaining multiple APIs is NOT a great solution.
If your hardware is 6 years old with no upgrades at this point then you need to save up some greenbacks and consider a new build. If you aren't scared you can do a custom build for pretty cheap. Just stay away from hard drives. an m.2 1 TB SSD is approaching the $100 range and is MORE than enough to handle a few steam games.
If I had to recommend a "Medium" build personally I'd go with:
(All prices are from Amazon)
Ryzen 5 2600x - $174.99 -
https://amzn.to/2HqMum4
NZXT H500 Case - $69.99 -
https://amzn.to/2YDl2Hg
Seasonic FOCUS 550 Gold - 74.99 -
https://amzn.to/2EjDgGp
Sapphire Radeon RX 590 - $199.99 -
https://amzn.to/2VOJtEI
MSI ProSeries AMD Ryzen 1st and 2nd Gen - $69.99 -
https://amzn.to/30vqsGg
Kingston Technology HyperX Fury Black 16GB - $114.99 -
https://amzn.to/2HsS2g0
Muskin Pilot M.2 1 TB SSD Drive $134.99 -
https://amzn.to/2LQJm7a
Thermaltake Flo Triple Riiing AiO $185.34
https://amzn.to/2LU1fCa
If it's not, well, you can turn off the lighting. Grand total as of right now: $1025.27. You can make compromises on your build, but compromises now mean replacing parts down the road. If you have the extra money I'd upgrade the graphics card, but this build should last you quite a while. If you don't have that kind of money, I put together 1 more build below.
Ryzen 5 2600 - $149.99 -
https://amzn.to/2VPC8F2
XFX Radeon RX 570 RS XXX Edition - $159.99 -
https://amzn.to/2Hp2CUV
MSI ProSeries AMD Ryzen 1st and 2nd Gen - $69.99 -
https://amzn.to/30vqsGg
NZXT H200 Mini-ITX Case - $69.98 -
https://amzn.to/2VwlZzu
Kingston Technology HyperX Fury Black 16GB - $114.99 -
https://amzn.to/2HsS2g0
Crucial P1 500GB M.2 SSD - $62.95 -
https://amzn.to/2EjxbJR
Seasonic FOCUS 450 Gold - $64.90 -
https://amzn.to/2YF1ToK
PC Cooler 1200 Fan Pack - $39.99 -
https://amzn.to/30tq0rT
Grand Total: $732.78
If you don't even have THAT much to spare, shoot me the specs of your current rig, and I'll brain storm a way to get more umph out of your machine.